Well, MP3 players are a thing of the past I know that much, but i do appreciate the compact size and dedicated hardware so I got this one, it came with 32GB of storage, Here are my findings
1- You need to heat up and remove the glass before you remove the frame as the frame has 4 screws under the glass !
2- The storage is a simple 32GB SD card, i took it out, Used DD to copy it to a 128GB SD card, put it back in, then used the format function on the device itself and it works !
That’s it, you can expand this to 128GB (Probably more, but i can’t guarantee that), but again, the firmware of the device is on the SD card, so you need to duplicate it before you put the new card in.